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All areas designated as forest according to the NFI forest definition. The forest definition includes shrub forest. The target variable "forest area" is also used when classifying the total area as forest or non-forest.

Sum of the stem cross-sectional areas at a height of 1.3 m (level for measuring diameter at breast height [dbh]) of living trees and shrubs (standing and lying) with a dbh ≥12 cm.

Dry weight (mass) of the stumps ≥7 cm in diameter, i.e. the aboveground, woody parts of trees or shrubs below the felling cut or (in the case of natural decay) below the break surface. The maximum height of a stump is 1.3 m; if it is >1.3 m, it is treated as a snag. The mass is determined on the basis of species- and decomposition-dependent wood densities.

Stemwood volume of all trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark that were harvested, died or disappeared between two inventories.

Increase in stemwood volume between two inventories of all surviving trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark, the stemwood volume of all ingrowing trees and shrubs with bark, and the modelled increase in the stemwood volume of the losses with bark during half the inventory period.

Increase in the stemwood volume between two inventories of all surviving trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark, the stemwood volume of all ingrowing trees and shrubs with bark, and the modelled increase in the stemwood volume of the losses with bark during half the inventory period minus the volume of mortality. The net increment thus corresponds to the increment (=gross increment) minus the volume of mortality.

Stemwood volume of all trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark that were harvested, died or disappeared between two inventories.

Stemwood volume of all trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark that died naturally between two inventories (e.g. due to windthrow or insects) or disappeared (e.g. due to avalanches), but that were not harvested. Mortality is the sum of natural losses and the remaining mortality.

Number of stems of living trees and shrubs (standing and lying) with a diameter at breast height (dbh) ≥12 cm.

Stemwood volume of standing dead trees and shrubs with a diameter at breast height (dbh) ≥12 cm less the volume of broken stem pieces, plus the volume of lying deadwood ≥7 cm in diameter (merchantable wood) without merchantable pieces in heaps of branches.

Volume of stumps ≥7 cm in diameter, i.e. the aboveground, woody parts of trees or shrubs below the felling cut or (in the case of natural decay) below the break surface. The maximum height of a stump is 1.3 m; if it is >1.3 m, it is treated as a snag.

Stemwood volume of living trees and shrubs (standing and lying) with a diameter at breast height (dbh) ≥12 cm with bark.